<!--文章顶部的悬窗-->
{% if article.ad %}
    <blockquote class="layui-elem-quote" style="border-left: 0px">
        {{ article.ad }}
    </blockquote>
{% else %}
    <div>
        <!-- 广告位：20：3广告位 -->
        <script>
          (function () {
            var s = '_' + Math.random().toString(36).slice(2)
            document.write('<div id="' + s + '"></div>');
            (window.slotbydup = window.slotbydup || []).push({
              id: '6187718',
              container: s,
              size: '20,3',
              display: 'inlay-fix'
            })
          })()
        </script>

        <script src="https://dup.baidustatic.com/js/om.js"></script>

        <br>
    </div>
{% endif %}